How far is Hillsboro, MO from Florissant, MO?
The driving distance from Hillsboro, MO to Florissant, MO is about 51 miles (82.1 km), with a travel time of about 00h 56m by car.
- The straight-line flight distance is about 40.6 miles (65.4 km).
- For a round trip, plan for roughly 01h 52m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 56m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Saint Louis County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Scattered Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Hillsboro and Florissant.
Turn-by-Turn Driving Directions
Step-by-step road directions between Hillsboro and Florissant.
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1
Start on Old State Highway 21
1.3 mi · 3 min · Old State Highway 21
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2
Turn left
53 m · 3 sec
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3
Take the ramp slight right toward MO 21 North: Saint Louis
1797 ft · 24 sec
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4
Merge slight left onto Veterans Memorial Highway
17.1 mi · 20 min · Veterans Memorial Highway
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5
Take the exit slight right toward MO 141: Arnold, Fenton
1384 ft · 24 sec
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6
Turn left
4 mi · 6 min
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7
Take the exit right toward MO 30 East: Saint Louis
1229 ft · 17 sec
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8
Merge slight left
2.5 mi · 4 min
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9
Take the exit left toward I 270 North
2202 ft · 35 sec
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10
Merge slight left
21 mi · 26 min
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11
Take the exit slight right toward US 67
1565 ft · 45 sec
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12
Turn left onto North Lindbergh Boulevard
1.8 mi · 3 min · North Lindbergh Boulevard
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13
Turn right onto West Washington Street
1 mi · 2 min · West Washington Street
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14
Turn left onto North New Florissant Road
26 m · 1 sec · North New Florissant Road
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15
Arrive at your destination
0 m · 1 sec · North New Florissant Road
Car Route Details
A richer read on the saved driving route between Hillsboro and Florissant.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 270 North
Merge slight left
21 mi · 00h 26m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Chance Showers And Thunderstorms leaving Hillsboro and Scattered Showers And Thunderstorms near Florissant.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Hillsboro to Florissant?
The road trip is about 51 miles (82.1 km) and usually takes 00h 56m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Sunset Hills is a useful midpoint, sitting about 25.1 miles from Hillsboro and 25.9 miles from Florissant.
How much longer is the road route than the straight-line distance?
The direct path is about 40.6 miles (65.4 km), while the road route adds roughly 10.4 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:38 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.79 one way or $13.58 round trip. Estimated CO2 is about 16 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Hillsboro and Scattered Showers And Thunderstorms near Florissant.
Stop Ideas Near Sunset Hills
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Sunset Hills.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between Hillsboro and Florissant. Straight-line distance: 40.61 mi (65.36 km).
#1 Hillsboro
City in Missouri, United States
| Population | 3,355 |
| Coordinates | 38.2322800, -90.5629000 |
| Altitude | 242 |
| Country | United States |
#2 Florissant
The most populous city in St.
| Population | 50,795 |
| Coordinates | 38.7892200, -90.3226100 |
| Altitude | 175 |
| Country | United States |
End: North New Florissant Road (-90.32261, 38.78922)
Estimated Travel Time
Distance: 82 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 41m |
| 40 mph (64.37 km/h) | 01h 16m |
| 50 mph (80.47 km/h) | 01h 01m |
| 60 mph (96.56 km/h) | 00h 50m |
| 70 mph (112.65 km/h) | 00h 43m |
| 80 mph (129 km/h) | 00h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $6.79 | $13.58 |
| Mid-grade | $4.25 | $7.66 | $15.31 |
| Premium | $4.65 | $8.38 | $16.75 |
| Diesel | $5.30 | $9.55 | $19.09 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Missouri · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.